background image

 

 

Instruction Manual 

DPA-18 Air Hyd. Power Unit - V1.0 

www.durapac.com 

Page 7 of 11 

 

6.0

 

Maintenance 

 

IMPORTANT: 

 

 

Check oil level regularly 

 

 

Use only good quality hydraulic fluid. 

Do NOT

 use brake fluid, transmission fluid, 

turbine oil, motor oil, alcohol, glycerine etc. Use of anything other than good quality 
hydraulic oil will void warranty and damage the power unit, hose, and application. We 
recommend Durapac Hydraulic Oil or equivalent 

 

 

Equipment must only be serviced by a qualified hydraulic technician. For repair service, 
contact your local Durapac authorised service centre 

 

 

Damage to hydraulic hoses may not be detected during visual inspections. For this 
reason, Durapac recommends that hydraulic hoses be replaced on a regular basis 

 

 

Tighten connections as needed. Use non-hardening pipe thread compound when 
servicing connections 

Dirt, sand, etc. will quickly ruin any hydraulic system.  Ensure that couplings are clean and free of 
foreign matter. After each use, clean couplings and attach dust caps. 

Maintenance is required when wear or leakage is noticed. Periodically inspect all components to 
detect any problem that may require service and maintenance.  

6.1

 

Adding Hydraulic Fluid 

 

WARNING: Always add oil with pump fully retracted or the system will contain more oil 
than the reservoir can hold 

6.1.1

 

Depressurise and disconnect hydraulic hose from application/cylinder. 

6.1.2

 

With the power unit in its upright, horizontal position, remove the air vent plug 
located on top of the reservoir. 

6.1.3

 

Use a small funnel to fill the reservoir to within 12.7 mm (0.5 ") from the 
oil/vent cap. 

6.1.4

 

Bleed air from system if necessary.  

6.1.5

 

Wipe up any spilled fluid and reinstall the air vent plug/reservoir cap. 

6.2

 

Bleeding Air from the System 

6.2.1

 

Repeat Steps 6.1.1 to 6.1.3 (above), if required. 

6.2.2

 

Invert cylinder and place at a lower level than the power unit reservoir. 

6.2.3

 

Extend and retract the cylinder several times without putting a load on the 
system. Air will be released into the power unit reservoir.  

6.2.4

 

Recheck oil level after removing air. 

6.3

 

Changing Hydraulic Fluid 

 

For best results, change fluid once a year or every 300 hours of use 

6.3.1

 

Repeat Steps 6.1.1 to 6.1.2 (above). 

Summary of Contents for DPA-18

Page 1: ...D 2 186 Granite Street GEEBUNG QLD 4034 Australia sales absoluteequipment com au Phone 61 7 3865 4006 Fax 61 7 3102 6288 Maximum Operating Pressure 700 bar Instruction Manual Reciprocating Air Hydraulic Power Unit Model DPA 18 ...

Page 2: ...a particular application 2 0 Receiving Instructions It is recommended prior to use that an inspection be done by qualified personnel and that any missing or damaged parts decals warning safety labels or signs are replaced with Durapac authorised replacement parts only Any power unit that appears to be damaged in any way is worn leaking or operates abnormally should be removed from service immediat...

Page 3: ...PORTANT If at any stage the safety related decals become hard to read these must be replaced Minimum age of the operator must be 18 years The operator must have read and understood all instructions safety issues cautions and warnings before starting to operate the equipment The operator is responsible for this activity towards other persons Do NOT lift hydraulic equipment by the hoses or couplers ...

Page 4: ...arp objects extreme heat or cold or heavy impact Do NOT allow the hose to kink twist curl crush cut or bend so tightly that the fluid flow within the hose is blocked or reduced Periodically inspect the hose for wear Hose material and coupler seals must be compatible with the hydraulic fluid used Hoses also must not come in contact with corrosive materials such as battery acid creosote impregnated ...

Page 5: ...n an unstable manner Should removal of air from power unit be required please follow the steps in 6 2 Bleeding Air from the System in the Maintenance Section 4 6 Priming the Pump Press the retract end of the pedal while holding down the air intake valve with a hexagonal wrench The air intake valve is located directly under the pedal Allow the pump to cycle approximately 15 seconds Remove the wrenc...

Page 6: ...inder in position release the Advance end of the pedal to deactivate the power unit 5 1 3 To retract the cylinder depress the Retract end of the pedal Figure 3 Operation 5 2 Pump with an Air Regulator 5 2 1 Open the air shut off valve or connect the air quick coupler Note Under certain circumstances the pump may need to be primed before operation Refer to 4 7 Priming the Pump in the Installation S...

Page 7: ...s Maintenance is required when wear or leakage is noticed Periodically inspect all components to detect any problem that may require service and maintenance 6 1 Adding Hydraulic Fluid WARNING Always add oil with pump fully retracted or the system will contain more oil than the reservoir can hold 6 1 1 Depressurise and disconnect hydraulic hose from application cylinder 6 1 2 With the power unit in...

Page 8: ...ended that an inline oiler and air dryer is installed and SAE grade oil 5W to 30W is used Set the unit to feed approximately one drop of oil per minute into the system 6 5 Storage 6 5 1 When not in use depressurise and disconnect the hydraulic power unit from the application 6 5 2 Wipe clean thoroughly and store in a clean dry environment Avoid temperature extremes 6 5 3 For transportation or long...

Page 9: ...Repair or replace as necessary Leaking application connection Replace application connection Application responds slower than normal Loose connection or coupler Tighten connection or coupler Restricted hydraulic line or fitting Clean and replace if damaged Leaking application connection Replace application connection Inadequate air supply Ensure air source can dedicate 7 8 cfm 4 12 bar 60 175 psi ...

Page 10: ...Instruction Manual DPA 18 Air Hyd Power Unit V1 0 www durapac com Page 10 of 11 8 0 Parts Breakdown ...

Page 11: ...2 39 Outlet bush ZAM2371 1 11 Silencer ZAM2348 1 40 Steel ball ZAM1273 1 12 Bolt ZAM2117 2 41 Spring ZAM2372 1 13 Switch gear ZAM2349 1 42 O ring ZAM2373 2 14 Spacer ZAM2350 2 43 Back up ring ZAM1834 2 15 Spacer ZAM2351 2 44 Outlet shaft ZAM2374 1 16 Base plate ZAM2352 1 45 Fixing plug ZAM2375 1 17 Cylinder ZAM2353 1 46 Spring ZAM2376 1 18 O ring ZAM2354 2 47 Pressure relief ZAM2377 1 19 Motor cov...

Reviews: